Complex Archive

What is a Complex Archive, how did it get created, and do I need to keep it? I have two of them from over a year and a half ago. I'm not a "geek" so try to explain as if you were in Kindergarten.

I never realized how much this "Paragon Backup & Recovery™, version 10, build 10815 (22.09.10 ) Suite" is too advanced for a non-geek. Most of the questions I have in the course of using this program are not to be found in the "Help" files. And even on the rare occasion when it is in there, it is unintelligible to me. So don't assume much knowledge if anyone replies. This qualification probably means no one will. But, thanks, if anyone does.

I have two of them from over a year and a half ago. Why/how would this get created that long ago, and me not know about it? There are 2 of them from the same time period, and that is all. Is this a fluke, or by someone's design?